package com.itheima.reggie.controller;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;

import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {
    @Autowired
    private EmployeeService employeeService;

    /**
     * 登录
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee) {
//1、将页面提交的密码password进行md5加密处理
        //获取前端传入的密码
        String pw = employee.getPassword();
        //将密码进行md5加密
        String password = DigestUtils.md5DigestAsHex(pw.getBytes());

        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加相等的条件
        queryWrapper.eq(Employee::getUsername, employee.getUsername());
//        将条件注入,返回查询的一条数据
        Employee one = employeeService.getOne(queryWrapper);
        //3、如果没有查询到则返回登录失败结果
        if (one == null) {
            return R.error("该账户不存在");
        }

        if (!one.getPassword().equals(password)) {
            return R.error("用户名或密码错误");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if (one.getStatus() == 0) {
            return R.error("改账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee", one.getId());
        return R.success(one);


    }

    /**
     * 退出
     *
     * @param request
     * @return
     */
    @PostMapping("/logout")

    public R<String> logout(HttpServletRequest request) {
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");

    }


    /**
     * 添加员工
     */
    @PostMapping
    public R<String> save(HttpServletRequest request, @RequestBody Employee employee) {
        log.info("添加员工信息: {}", employee.toString());

        //设置初始密码: 123456并进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
//获取创建者id
        Long emp = (Long) request.getSession().getAttribute("employee");
//将创建者加入数据
//        employee.setCreateUser(emp);
//        employee.setUpdateUser(emp);

        //将员工添加进数据库
        employeeService.save(employee);

//    将添加成功数据返回
        return R.success("员工添加成功");
    }

    /**
     * 员工信息分页查询
     *
     * @param page     当前查询页码
     * @param pageSize 每页展示记录数
     * @param name     员工姓名 - 可选参数
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        log.info("page= {}", "pageSize= {}", "name= {}", page, pageSize, name);
        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件

        queryWrapper.like(StringUtils.isNotEmpty(name), Employee::getName, name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询(添加构造器对象和条件)
        employeeService.page(pageInfo, queryWrapper);
        //返回数据
        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工信息
     *
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request, @RequestBody Employee employee) {
        Long emp = (long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(emp);
        employeeService.updateById(employee);
        return R.success("修改成功");
    }


    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee byId = employeeService.getById(id);
        if (byId != null){

        return R.success(byId);
        }
return R.error("未查询到对应员工信息");
    }




}
